I have an '05 Gulfstream Endura. At 50 hours, the generator had to be pulled, because it would only run for a few seconds, then shut off. Dealer replaced brushes. Generator now has 200 hours, and has had to be pulled again. Brushes & rotor were replaced. The generator starts by itself, and will do so if even if plugged in (not always.) After bringing it back from repair shop this latest time, the generator would not start using either switch - remote or on generator. After plugging it in, it started on its own again (without touching any switch.) Just looking for some possible causes or ideas for what could be the problem. This has been ongoing since purchase.